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Revisions for passive-pm

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

A small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

A small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

A small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

A small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

SEM Stub Monitors

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. Read More

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

SEM Stub Monitors

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, when measuring course particulates (PM10-2.5), making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology.

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

electret methods are particle-specific

electret methods are particle-specific

Devices

SEM Stub Monitors

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. [read more].

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

Devices

SEM Stub Monitors

In field testing, these samplers have been demonstrated to vary (CV) only 11.6% from Federal Reference Methods, making this the most precise published passive particle monitor design (Ott, Cyrs, & Peters, 2008). Public Lab is evaluating the deployment of this technology. [read more].

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Sticky Pad Monitors

Developed to track 'nuisance dust,'(i.e. any visible dust blowing onto properties adjacent from a dust producing industrial operation), sticky pads are pieces of tape that collect wind-blown dust. No system for speciating particles or correlating particle accumulations with airborne concentrations has been developed, however, sticky pads are the only dust monitoring system that records the direction dust came from.

The most advanced system, developed at the University of Leeds and spun off into the DustScan company, uses two sticky pads-- a cylindrical pad used to track the direction dust comes from, and an upward-facing sticky pad to track total dust. The devices are made from standard sizes of ABS drainage pipe and commercially available tape.

For analysis, sticky pads are scanned at low resolution, and the relative darkness or lightness (albedo) is measured by software to quantify dust accumulation.

Other Passive Monitors

Vinzents Passive monitor

a small dual-sticky pad system designed for indoor use only, with one pad facing up and the other one horizontal. This system uses a similar deposition model as SEM stub monitors, and analysis can be performed using optical microscopy.

Exposed Filter Systems

Ferm Passive Monitor

Martin Ferm has developed two different monitors:
1) a series of vertical strings less than 1mm in diameter collect particles from all directions for analysis with mass spectrometry, not investigated because of the expense of analysis.
2) a polypropylene container with an exposed filter, for mass spectrometry.

See:
Fern, Martin, Development and Test of a Passive Sampler for Fine Particles, Swedish Environmental Research Institute, 2010.

Einstein–Lioy Deposition Sampler

A similar arrangement to the Ferm monitor, with four exposed 37mm filters for mass spectrometry analysis.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be labor intensive or expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

Devices

SEM Stub Monitors

Developed originally for indoor dust monitoring at the University of North Carolina by Jeff Wagner and David Leith, this tiny monitor (in the middle of the housing, below) consists of a fine mesh cap over top of a Scanning Electron Microscopy (SEM) pin stub, a small aluminum object that looks like a pin. Thomas Peters and Darrin Ott at the University of Iowa added a wind-and-rain housing so the monitors can be used outside. They also added a glass microscope slide cover on top of the stub, allowing lower-cost analysis with a standard visible-light microscope.

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost (less than $100 devices)

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

may correlate well with [Federal Reference Methods]

not an officially recognized method

Devices

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Advantages and Disadvantages

Advantages

Disadvantages

low cost

deployed for 3-7 days, low temporal resolution

deployed without electricity

not real-time (results must be analyzed after collection)

simple setup and calibration

analysis can be expensive

actual particles are collected

particle speciation is limited by method and cost

can generate airborne particle concentrations

no way to extrapolate to airborne concentrations of speciated particles

Devices

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Devices

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Devices

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations and the direction dust comes from.

Passive monitoring promises to be less expensive and more robust than active monitors' mechanical and electrical components, but comes with a different set of challenges. Public Lab is investigating one promising passive monitor as a tool for measuring airborne PM concentrations.

Devices

Introduction

A passive particle monitor measures particles without the use of mechanical or electrical systems, depending instead on natural wind-blown deposition of particles on a collection surface. Passive particle monitoring is frequently used for qualitative "nuisance dust" measurements, and more recently to extrapolate airborne PM concentrations. Passive monitoring promises to be less expensive and more robust than active monitors with mechanical and electrical components, but comes with a different set of challenges. Public Lab has investigated one promising passive monitor as a tool for measuring airborne PM concentrations.